Water heater



L. F. MORGAN Nov. 13, 1934.

WATER HEATER Filed Jan. 19, 1954 INVENTOR.

ATTORNEY.

Patented Nov. 13, 1934 UNITED STATES PATENT OFFICE 10 Claims.

This invention relates to heating apparatus and its broad aspects is directed more particularly to improvements in heaters for supplying hot water. This application is a continuation in part.of an application, Serial No. 679,377, filed by me on July 7, 1933.

The principal objects of the invention are directed to the provision of a heater which comprises but a relatively few parts so arranged in a novel manner that the heater is simple in form and economical to manufacture yet at the same time efiicient in its operation.

Various other objects and advantages of the invention as well as novel features of construction will be obvious from the following description thereof, which, for purposes of disclosure, is illustrated in the accompanying drawing. It will be understood, however, that various changes and modifications may be made in the form of the invention as illustrated without departing from the spirit and scope of the invention. I therefore do not wish to be limited to the detail of the precise construction and arrangement shown. In the drawing:

Fig. 1 is a vertical sectional elevational' view through a heater to illustrate the construction thereof.

Fig. 2 is a plan view of a heater shown in Fig. 1.

Fig. 3 is a sectional plan view on the line 3-3 of Fig. 1, and

Fig. 4 is a sectional plan view on the line 44 of Fig. 1.

Referring to the drawing more in detail, the invention will now be fully described.

The heater comprises outer and intermediate or inner tubular walls 2 and 4 extending upwardly in spaced relation and being connected at their lower ends as by a wall 6 while their upper ends are closed, in some suitable manner as shown. Between the walls 2 and 4 an outer water compartment 8 is formed which surrounds a heating chamber 9. An inner tubular wall 12 extends upwardly within the chamber 9 in'spaced relation with respect to wall 4 to form an annular passageway 10 therebetween, as shown.

A fuel burner unit is provided at the lower end of the heater which may include a burner nozzle such as 20 for gas or the like and is preferably carried by a receptacle base 22.

The base may be detachably secured to the lower wall 6 as by bolts 7 while the nozzle 20 is arranged to direct a flame upwardly in the member 12. Air openings 24 are provided in the base 22 as shown and a flue 26 is connected to the passageway 10 between wall 4 and member 12. This is preferably located at the lower side thereof as shown.

A wall 28 may be provided outside the outer wall 2 to provide an outer water compartment 30. Threaded openings may be located in this wall for receiving a cold water pipe and aplug, as

shown. When the lower opening is used for a pipe 29 to admit water, the upper opening may have a plug 31 therein, as shown. An inlet such as 36 is provided in the outer wall 2 and it is in communication with the compartment 30.

A baffle 38 is provided in the chamber 8 and is preferably arranged to cause water to circulate longitudinally of and within the chamber and around the wall 4. This bafiie 38 may consist of a strip-like member bent helically around the wall 4, as shown.

A water compartment in the form of a coil or coils such as 40 extends upwardly within the inner tubular member 12. Its lower end is connected to a tubular fitting 42 which passes through wall 12 and is screwed into or otherwise secured to wall 4. The parts are so arranged that the lower end of the coil is in communication with chamber 8, preferably at its lower side.

The upper end of the coil 40 is adapted to be connected to a pipe of a hot water system and this may be accomplished in the following manner. A part 44, which may be called a hub, is associated with the walls 2 and 4 and this hub 44 is bored and provided with screw threads, as shown, for receiving a screw end part 45 of the coil and the screw end 46 of a pipe 48. A bleed or weep opening 52 may connect the chamber 8 and the outlet connection for the coil, as shown. A baffie may be provided which may be disposed spirally around the central member 12.

In operation an inlet pipe will be connected to one of the inlet openings of compartment 30 so that cold water may be delivered to the heater. It will be understood that the burner 20 will be lighted for heating the water. Thewater passes into the outer water compartment 8 through the port 36. Heat from the burner passes upwardly within member 12, then downwardly in the passageway between member 12 and wall 4 and outwardly through flue 26'. This brings about direct heating of the coil 40 and a heating of the wall 4.

The water being heated in coil 40 has a tendency to circulate. upwardly while water in chamself through the openings 24. Any condensation.

may drip into the receptacle base 22 and,-being in the vicinity of the burner, it is vaporized so that it is discharged through openings 24 or upwardly through central tube 12 and downwardly and outwardly through flue 26.

It will be noted that the water circulates downwardly and upwardly and that the products of combustion travel upwardly and then downward-. ly. The passageways and compartments are so arranged that relatively cold water first contacts with a warm wall and that the water thus warmed has its temperature further raised during its passage through the coil which is in the direct path of the burner flame.

As will'be seen, air pocketing at the upper side of the chamber is obviated by means of the bleed opening 52. I

The heater of the invention may be connected in series with a hot water storage tank or a supply pipe or, of course, it may beconnected in various other ways to heat water or other fluids.

The heater is simple in construction so as to be economical to manufacture and by reason of its novel form is efficient in its operation.

What I claim is:

1. A water heater comprising in combination, outer and inner spaced walls extending upwardly with their lower and upper ends connected to form a water compartment therebetween anda heating chamber interiorly of the inner walLthe said outer wall provided with a water inlet, a second water compartment extending upwardly in the heating chamber, an inner tubular member extending upwardly in said heating chamber spaced from said inner wall to form a passageway therebetween and disposed between said second compartment and inner wall, a flue leading from said heating chamber, connections between i said second compartment and water compa'rt-' said water inlet and which is provided with an inlet thereinto, and a baffle member arranged spirally in the water compartment between its upper and lower ends whereby water is caused to circulate around and longitudinally thereof.

2. A water heater comprising in combination, outer and inner spaced walls extending upwardly with their lower and upper ends connected to form a water compartment therebetween and a heating chamber interiorly of the inner wall, the said outer wall provided with a water inlet in the upper portion of the chamber, a second water compartment extending upwardly in the heating chambenan inner tubular member extending up wardly in said heating chamber spaced from said inner wall to form a passageway therebetween, a.

flue leading from said heating chamber, connec tions between said second compartment and water compartment, connections for connecting said second compartment to a water oiftake, and a baflle member arranged spirally in the firstnamed water compartment between its upper and around and longitudinally thereof.

3. A water heater comprising in combination, outer and inner spaced walls extending upwardly with their lower and upper ends connected to form a water compartment therebetween and a heating chamber interiorly of the inner wall, the said outer wall provided with a water inlet in the upper "portion of the chamber, a second water compartment extending upwardly in the heating chamber, an inner tubular member extending upwardly in said heating chamber spaced from said inner wall to form a passageway therebetween and disposed between said second compartment and inner wall, a flue leading from said heating chamber at the lower side thereof, connections between said second compartment and firstnamed water compartment, connections for connecting said second compartment to a water olftake, and a wall provided with an inlet extending up and down on said outer wall co-operating therewith to form an outer chamber in communi-j cation-with said water inlet of the outer wall.

4. A water heater comprising in combination, concentric tube-like outer and inner spaced walls, the said walls being connected at the lower ends thereof and their upper ends being separately connected together to form an outer closed water compartment surrounding a central heating chamber closed at its upper end and open at its lower end, a water take-off separate froma'n inner water compartment extending through the'upper closed end of said outer wall, an inner water compartment within the heating chamber connected at its upper end to said water take-off and at its lower end to the lower end of a said water compartment, and a tube member extending upwardly in said heating chamberterminating below said closed upper end of the inner wall and disposed between the said inner water compartment and inner wall forming a continuous passageway extending upwardly within said tube member past said inner water compartment and downwardly between said tube member and'inner wall.

5. A water heater comprising in combination, concentric tube-like outer and inner spaced walls, thesaid walls being connected at the lower ends thereof and their upper ends being separately connected together to form an outer closed water compartment surrounding a central heating chamber closed at its upper end and open at its lower end, a water take-off separate from an inner water compartment extending through the upper closed end of said outer wall, an inner water compartment within the heating chamber connected at its upper end to said Water take-off and at its lower end to the lower end of said water compartment, and a tube member extending upwardly in said heating chamber terminating below said closed upper end of the inner wall and disposed between the said inner water compartment and inner wall'forming a continuous passageway extending upwardly within said tube member past said inner water compartment and downwardly between said tube member and inner connectionsbetween the'lower ends thereof and wall portions at the upper ends thereof to form a closed outer annular water compartment around a closed central heating chamber which is open at its lower side only, a water take-off separate from said compartment extending through the wall portion at the upper ends of said outer and inner walls, an inner water compartment within the heating chamber connected at its upper end to said take-off and at its lower end to said outer water compartment adjacent its lower side, a tube member extending upwardly in said heating chamber terminating below the wall portion at the upper end of the inner wall and disposed around the inner water compartment and at a distance from said inner wall providing a continuous passageway extending upwardly within said tube and downwardly between said tube and inner wall, and a spiral baflie around said inner wall to efiect circulation of water around and along the outer compartment.

'7. A water heater comprising in combination, upwardly extending spaced outer and inner walls, connections between the lower ends thereof and wall portions at the upper ends thereof to form a closed outer annular water compartment around a closed central heating chamber which is open at its lower side only, a water take-off separate from said compartment extending through the wall portion at the upper ends of said outer and inner walls, an inner water compartment within the heating chamber connected at its upper end to said take-off and at its lower end to said outer water compartment adjacent its lower side, a tube member extending upwardly in said heating chamber terminating below the wall portion at the upper end of the inner wall and disposed around the inner water compartment and at a distance from said inner wall providing a continuous passageway extending upwardly within said tube and downwardly between said tube and inner wall, a spiral bafiie around said inner wall to effect circulation of water around and along the outer compartment, and a spiral bafile around said inner tube in the passageway between the said tube and inner wall.

8. A water heater comprising in combination, upwardly extending spaced inner and outer walls, upper wall members connecting the upper ends of said outer and inner walls and lower wall members connecting the lower ends of said walls whereby the said walls and wall members form an outer annular water compartment around and over a central heating chamber which is open at its lower side, a Water take-off extending through said upper wall members, a coil within said heating chamber connected at its opposite ends to said water take-off and said outer water compartment adjacent the lower side thereof, baffle means extending downwardly and around within said outer water compartment, an inner tube member extending upwardly in said heating chamber around said coil and spaced from said inner wall and from the upper wall member connected to the upper ends of the inner wall providing a continuous passageway extending upwardly within said inner tube and downwardly between said tube member and inner wall, and a flue connected to said downwardly extending passageway adjacent its lower end.

9. A water heater comprising in combination, upwardly extending spaced inner and outer walls, upper wall members connecting the upper ends of said outer and inner wallsv and lower wall members connecting the lower ends of said walls whereby the said walls and wall members form an outer annular water compartment around and over a central heating chamber which is open at its lower side, a water take-off extending through said upper wall members, a coil within said heating chamber connected at its opposite ends to said water take-off and said outer water compartment adjacent the lower side thereof, baffle means extending downwardly and around within said outer water compartment, an inner tube member extending upwardly in said heating chamber around said coil and spaced from said inner wall and from the upper wall member connected to the upper ends of the inner wall providing a continuous passageway extending upwardly within said inner tube and downwardly between said tube member and inner wall, a flue connected to said downwardly extending passageway adjacent its lower end, and baffle means extending downwardly and around in said passageway.

10. A water heater comprising in combination, upwardly extending spaced inner and outer walls, upper wall members connecting the upper ends of said outer and inner walls and lower wall members connecting the lower ends of said walls whereby the said walls and wall members form an outer annular water compartment around and over a central heating chamber which is open at its lower side, a water take-ofi extending through said upper wall members, a coil within said heating chamber connected at its opposite ends to said water take-oil and said outer water compartment adjacent the lower side thereof, baffle means extending downwardly and around within said outer water compartment, an inner tube member extending upwardly in said heating chamber around said coil and spaced from said inner wall and from the upper wall member connected to the upper ends of the inner wall providing a continuous passageway extending upwardly within said inner tube and downwardly between said tube member and inner wall, a flue connected to said downwardly extending passageway adjacent its lower end, baflie means extending LEIGH F. MORGAN. 

